Abstract: System and method for maintaining perceived hue constancy. A method for displaying an image includes receiving a color vector and associated image data, remapping the color vector to maintain a perceived hue constancy by adjusting a hue component of the color vector in response to a change in a lightness component or a chroma component of the color vector, providing the remapped color vector to a light source for display, and displaying image data associated with the color vector. The use of the constant hue curve ensures that the adjusting of the color vector maintains the perceived hue of the color vector, thereby helping to maintain image quality.

Abstract: A color control algorithm compensates variations in the display system so as to maintain color consistency in the projected images on the screen by constructing a color mapping table of the display system to include effects due to the variations and during image display applications, generating inputs of the color mapping table to include the effects due to the variations in the display system.

Abstract: A method for prioritizing IP traffic in a wireless network based on a type-of-service (TOS) identifier is provided. The method includes receiving an IP datagram. The IP datagram comprises an original TOS identifier. An IP message is formed by adding an IP header to the IP datagram. The original TOS identifier is copied from the IP datagram into a duplicate TOS identifier in the IP header.

Abstract: In display systems employing spatial light modulators, the OFF-state light from OFF-state pixels of the spatial light modulator can be captured and directed back to the pixels of the spatial light modulator so as to recycle the OFF-state light in the display system. Bitplanes derived from the desired image to be produced are calibrated to include the recycled off-state light to properly produce the desired image using the display system.

Abstract: System and method for maintaining perceived hue constancy. A method for displaying an image includes receiving a color vector and associated image data, remapping the color vector to maintain a perceived hue constancy by adjusting a hue component of the color vector in response to a change in a lightness component or a chroma component of the color vector, providing the remapped color vector to a light source for display, and displaying image data associated with the color vector. The use of the constant hue curve ensures that the adjusting of the color vector maintains the perceived hue of the color vector, thereby helping to maintain image quality.

Abstract: Disclosed embodiments relate to techniques for color gamut mapping when an input signal transmitting color visual images has a different color gamut than does the output display device. Polynomial rubber-sheet mapping may be used to translate the input color gamut to the output color gamut on a hue-by-hue basis within a three-dimensional perceptual color space. Also, a memory color look-up table may be used to preserve memory colors in the input gamut which are capable of reproduction within the output gamut. By using such techniques alone or in combination, it may be possible to more effectively map an input color gamut to a different output color gamut with improved calorimetric accuracy.

Abstract: System and method for generating multiprimary signals for use in display devices. A preferred embodiment comprises converting a color signal into an intermediate color space representation of the color signal, converting one of a plurality of multiprimary signals that is a representation of the color signal into an intermediate color space representation of the multiprimary signal, computing a quality measure of the intermediate color space representations of the color signal and the multiprimary signal, repeating the converting of a multiprimary signal and the computing for the remainder of the plurality of multiprimary signals, and selecting a multiprimary signal that optimizes the quality measure. The quality measure can consider requirements such as those minimizing a distance between the color signal and the multiprimary signal, an energy change as well as a phase change between the multiprimary signal and its neighbors, all leading to improved image quality.

Abstract: System and method for computing coefficients for color correcting rendered colors used in displaying images. A preferred embodiment comprises measuring color values of light output for a display system, receiving color values of desired colors, and computing a color correction matrix based on the measured color values and the input color values. The color correction matrix may be used to modify color commands to a light engine of the display system. The modifications to the color commands permit the storage and use of a set of color commands designed for a reference display system, simplifying display system design and manufacture.

Abstract: According to one embodiment of the present invention, a system for encoding an optical spectrum includes a dispersive element, a digital micromirror device (DMD) array, a detector, and a controller. The dispersive element receives light from a source and disperses the light to yield light components of different wavelengths. The digital micromirror device (DMD) array has micromirrors that modulate the light to encode an optical spectrum of the light. The detector detects the light that has been modulated. The controller generates an intensity versus time waveform representing the optical spectrum of the detected light.

Abstract: In accordance with a particular embodiment of the present disclosure, color correction based on light intensity in imaging systems may be accomplished by applying a color correction data structure to color component values.

Abstract: A method for sending IP packets from a base station to a mobile station during transition of the mobile station from a dormant state to an active state is provided. The method includes receiving a lagging feature request from the mobile station. A physical layer of a traffic channel is established between the base station and the mobile station. A network layer of the traffic channel is established between the base station and the mobile station. After the physical layer of the traffic channel is established and while the network layer of the traffic channel is being established, the IP packets are packaged and sent to the mobile station in a particular format.

Abstract: In one embodiment, an image decoding system for a YCbCr formatted signal includes a color space converter capable of representing an RGB image signal with one or two negative image signal components. The image decoding system further includes a degamma correction unit and an image signal formatter. An offset of the image black level from zero corresponding to the image signal offset produced by the color space converter is employed to perform degamma correction. In a further embodiment, gain, offset, and sign are removed from the image signal produced by the color space converter prior to degamma correction. The image signal formatter may utilize a one-dimensional and a three-dimensional lookup table to produce an image signal that may include secondary and white image components. The system advantageously accommodates decoding xvYCC-encoded image data in conventional as well as new hardware display system architectures.

Abstract: A system and method for gamut mapping out-of-gamut signals. A method includes adjusting each color in a color signal, determining a maximum color value of the color signal, in response to a determining that the maximum color value exceeds a maximum displayable color value, scaling color values of colors not having the maximum color value, and setting the color value of the color having the maximum color value to be equal to the maximum displayable color value. The method further includes leaving the color values of the colors in the color signal unchanged in response to a determining that the maximum color value does not exceed the maximum displayable color value. The scaling of color values not equal to the maximum color value results in a maintaining of a proper hue of the color signal, thereby not introducing color artifacts and other forms of color noise.

Abstract: System and method for maintaining perceived hue constancy. A method for displaying an image includes receiving a color vector and associated image data, remapping the color vector to maintain a perceived hue constancy by adjusting a hue component of the color vector in response to a change in a lightness component or a chroma component of the color vector, providing the remapped color vector to a light source for display, and displaying image data associated with the color vector. The use of the constant hue curve ensures that the adjusting of the color vector maintains the perceived hue of the color vector, thereby helping to maintain image quality.

Abstract: A color control algorithm compensates variations in the display system so as to maintain color consistency in the projected images on the screen by constructing a color mapping table of the display system to include effects due to the variations and during image display applications, generating inputs of the color mapping table to include the effects due to the variations in the display system.

Abstract: An improved color processing method for use in imaging systems transforms the input color image components into an output set of color image components, at least one of which is transformed using a non-linear transformation function.

Abstract: In a method embodiment, a method for image processing includes receiving one or more signals indicative of an optical characteristic of one or more respective light beams. A transform is generated based on the received one or more signals. The transform converts a first plurality of image components encoded by a first plurality of colors to a second plurality of image components encoded by a second plurality of colors.

Abstract: Color or grayscale images having optical elements induced geometric distortions can be corrected on individual color image component by creating correction image component having the complementary distortion; and applying the correction image component to the corresponding distorted color image component.

Abstract: The noise reduction filter is intensity adaptive and incorporates directional variances of input images.

Abstract: An improved color processing method for use in imaging systems transforms the input color image components into an output set of color image components, at least one of which is transformed using a non-linear transformation function.